<template>
  <div class="appLogin">
    <div class="loginBox">
      <!-- logo -->
      <div class="loginImg">
        <img src="../assets/logo.png" alt="" />
      </div>
      <!-- 表单 -->
      <el-form
        ref="loginFormRef"
        class="loginForm"
        :model="loginForm"
        :rules="loginFormRules"
      >
        <!-- 用户名 -->
        <el-form-item prop="username">
          <el-input
            v-model="loginForm.username"
            prefix-icon="iconfont icon-user"
          ></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item prop="password">
          <el-input
            v-model="loginForm.password"
            type="password"
            prefix-icon="iconfont icon-3702mima"
          ></el-input>
        </el-form-item>
        <!-- 按钮 -->
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="reset">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  name: 'Login',
  data() {
    return {
      // 登录的数据绑定对象
      loginForm: {
        username: '',
        password: '',
      },
      // 输入框校验规则
      loginFormRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 6, message: '长度在 3 到 6 个字符', trigger: 'blur' },
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          {
            min: 6,
            max: 15,
            message: '长度在 6 到 15 个字符',
            trigger: 'blur',
          },
        ],
      },
    }
  },
  methods: {
    reset() {
      this.$refs.loginFormRef.resetFields()
    },
    login() {
      this.$refs.loginFormRef.validate(async (val) => {
        if (!val) return
        const { data: res } = await this.$http.post('login', this.loginForm)
        if (res.meta.status !== 200) return this.$message.error('登录失败')
        this.$message.success('登录成功')
        // 登录成功后的token保存到客户端的sessionStorage中
        window.sessionStorage.setItem('token', res.data.token)
        this.$router.push('/home')
      })
    },
  },
}
</script>

<style scoped>
.appLogin {
  background-color: rgb(99, 141, 189);
  height: 100%;
}
.appLogin .loginBox {
  width: 450px;
  height: 300px;
  background-color: rgb(234, 238, 241);
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}
.appLogin .loginBox .loginImg {
  width: 120px;
  height: 120px;
  border: 1px solid rgb(216, 211, 211);
  padding: 5px;
  border-radius: 50%;
  position: absolute;
  left: 50%;
  transform: translate(-50%, -50%);
  background-color: rgb(234, 238, 241);
}
.appLogin .loginBox .loginImg img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background-color: rgb(234, 238, 241);
}
.appLogin .loginBox .loginForm {
  width: 100%;
  position: absolute;
  bottom: 0;
  padding: 0 20px;
  box-sizing: border-box;
}
.appLogin .loginBox .btns {
  display: flex;
  justify-content: flex-end;
}
</style>
